Telegraphy.



I. KITSEE. TELEGRAPHY. APPLICATION FILED 001'. 10,1907

Patented May 18, 1909 2 SHEETS-SHEET 1.

I. KITSEE. TELEGRAPHY. APPLICATION FILED OOT. 10,1907.

921 ,71 5, Patented May 18, 1909.

2 SHEETS-SHEET 2 WITNESSES:

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TELE GRAIPHY.

Specification of Letters Patent.

Patented May is, 1909.

A rglication filed October in, 1907. I Serial No. 396,828.

To oll'whom it may concern:

Be it known that .l, lsinon'Kl'rsriE, :rv citizen of the United State's, residing at Philadelphia, in the county oi Philadelphia and Stateof Pennsylvania, have invaded certain net and u... 'l'ul lin )rorcnienls in Telegraphy, of \uhich the follou'iug is s specifies.- tion.

My inveniion relates to an improvement in telegrsphy. w

it has more s )ecinl reference to telegraph ng with rapithy recurring or induced in?- pulses.

The system substnntiallv rishe used as usiinpl or as a (hip "3X sndu hen uoxlced in connecuon uith an arrangement where-in av straight or Voltaircurrent is employed, such for instance as is illustrated in Figure 3, the sysl e1n may he used as a quadruplex. It is obvious that the receiving "cl? may be connected to any localized arrangement, such for instance as a simple sounder or grouping of electio-ruognets whereby the received inipul-sesnrsy' he translated in a. manner, so as to prodinrc automatically typewritten copies.

Figs. 1, 2 and 3 diugrornnmiic views illustrating nay invenlion adopted-tor simplex, duplex o: qundiuplex. systenns.

i, l, is the line of transmission. This line is, about half way of its length, connected with the interposition of the secondary 3 of an inductoriiun i? to the ground 5. The primary 4 of this inductoriuzn is connected to any available source oi current adapted to produce rapidly recurring or alternating impulses.

6 is a. polarized relay provided with the and the two stops 8. These u i lined may armature 1 stops are electrically connected with each other.

9, 9, are local circuits connected in the armature and stops respectively. The r lay is connected in the line proper and is grounded, here shown with the interposition of the adjustable inductance 10 and adjustable resistance 1.1,totl1e ground 12. The inductance and resistance are shunted through the licy 13 connected to ground In 1* 2, the shunt oroun d the resistances comprises, in coniunct-ion with the key 13, the primary 15 of so inductoriuni, the onde y-lo of said inductorium being connected in shunt to the relay proper. in both figures, the condenser 17 is interposed between the relay and the wound and conto op denser Minterpossd between the shuntcircuit includingthe key in lig. .3, in COIHUHCUOH with the system as shown in the line is also provideduith a system whereby the line can be dunlexed with straight or vol'rzuc current; This duplexing system is clearly illustrated and described in Letters Patent No. 863,853

dated August 20, 1907, rind l designate this n; sngement by the numeral 20 as an entiieiy.

i vdll now describe, first, my invention as and over the line to the ground on the left side. I The instrument of both terminal .ll therefore always be operated armature will alternately move to- LP- end in contact with the right or left The devices connected to the local 9 have to be adjusted, so :is to work somewhat sluggish, and as the impulses follow each other in quick succession, the ornnitnre will not remain on any of the stops long enough ate the local. Should now the operator desire to send messages, he simply closes his key, Through the closing of this key, the impedance and resist-once will he shunted and the impulses will flow nearly in their entirety through the shunt including the key. but will not be able to operate the instrument at the 1" or on station. The relay, therefore, at the other terminal of the line will remain idle and the armature will remain positioned at one or the other of the stops 8, thus giving hand the local time enough to operate. In sending characters comprising: dots and dashes,

Issue inoperative through the closing of the key.

i will. now consid the invention as applied to a duplex. Here also the linerel ays are continuously operated on through the repidly recurring or alternating impulses inll hen now the At the far oil instrument, the line relay will be made idle, for the 'rcuson that only u very slight part of the impulses generated through 2 will flow at the When new the operator at the for oil' station depresses his key simultaneously with the deressionof the key of the first operator, the

impulses will [low through the shunts of both stations. Each operator in working his key has to udjustthe relation of the primary as to the secondary in a manner, so that the whole energy of the generated impulses is required to go throughthe primary for the purpose of actuating the home instrument. llhen now. through the depression of the key at the far oil station, the former force of the impulse is one-hall, this halt passing through the primary will not suiiice to make operative the home relay; therefore, both relays will be made idle through the depression of the keys of both stations; but us soon as oneor t ie other of the keys released, the whole force of the in'ipulses will ilow through that shunt which has the key de 'n'essed and only the relay at the tar oil station will be made idle; the home instrument will still be working.

Persons versed in the art will readily understand the working: of this system and the ease with which the halance is obtained. Itmay be stated in this connection that the condenser 17 should he of a comparatively small capacity and the condenser 14 of a comparatively lsrgecapacity. v

in Fig. 3, the resistance inserted between the hatte s end the ground should be such as to cile'ctuelly bar the passage of the indue-ed impulses through these batteries to the ground.

' loving now described my invention, what I claim new and desire to secure by Letters Patent is 1. A system of tclegrnphy comprising a line of transmission, polarized relays for each station inserted in said line, a sonrcc oi' alternating or rapidly recurring impulses normally connected to said line thereby normally operating said relays, a localized circuit for e1ch.,0i"snid relays, said localized circuit adapted to be operated only during the time that practically no current is flowing through said relays.

station to the ground.v

2. In a system of telegra hy, a polarized relay inserted in the line, a oca-l circuit connected to said relay, rapidly recurring or induced impulses to normally operate said relay in quick succession and means to operate the local circuit only during the time that practically no current is flowing through said relay.

3. In telegraphy, means to transmit messages from one station to a second station, said means embracing a source of rapidly recurring or alternating impulses connected about midway to the line of transmission, a polarized relay for each station connected in the line and with the interposition of retarding devices to the return and means at each station toshunt said retarding devices in sccordunce with the characters to be transmitted.

4. In telegraphy, means to transmit messages simultaneously in opposite directions,

, said menus embracing a source of rapidly recurring or alternating impulses connected, electrically considered, about midway to the line of transmission, a polarized relay for each. station connected to the line and with the interposition of retarding devices to the return respectively, means to shunt said retarding devices and relay in accordance with the impulses to be transmitted and means to develop, through the closing of sold shunt, locitl impulses adapted to flow through the home relay.

5. In telegraiihy, in combination with means to duplex a line with the aid of a. straight current, means to simultaneously duplex e. line with the aidoi rapidly recurring or alternating impulses, the means to duplex the line with a straight currentembrzicing sources of current connected to the line in opposite direction, electro-nmgnet for each of said sources and means to shunt part of said electro-magnct" in accordance with the characters to be transmitted; the means to duplex the line with the aid of rapidly recurring or alternating impulses comprising a source of said impulses connected normally to the line, polarized relays connected to the line and with the interposition of retarding devices to the return, means to shunt said relay and reterding devices in accordance with the characters to be transmitted and means to generate, through the closing of said shunt, impulses adapted to flow through the home impulses.

In testimony whereof I aiflix my signature in presence of ,two witnesses.

ISIDOR KITSEE.

Witnesses MARY (J. SMITH, Enrrn R. STILLEY. 

